Hydrocarbon engine fuel pump



Jan.'21, 1936. H. HANEY i 2,028,208

: HYDROCARBON ENGINE FUEL PUMP Original Filed July-28, 1930 2 Sheets-Sheet 1 INVENTOR. A. H. H/INE).

Jan. 21, 1936. L. H. HANEY HYDROCARBON ENGINE FUEL PUMP Original Filed July 28, 1950 2 Sheets-Sheet 2 IOI INVENTOR. Z. H. HA NEK ATTO EY.

Patented Jan. 21, 9 Q

UNITED STATES PATENT OFFICE Application July 28, 1930, Serial No. 471,167 Renewed April 9, 1935 1 Claim.

This invention relates to improvements in hydro-carbon engine fuel pumps.

The general object of the invention is to provide an improved means for handling and condiscription taken in connection with the accomm panying drawings wherein:

Fig. 1 is a view of the injector side of an engine with portions thereof in section and showing my P Fig. 2 is a central section through the engine with my pump also shown in section, and

Fig. 3 is an enlarged fragmentary'sectional detail of my fuel pump.

Referring to the drawings by reference characters I have indicated my improved engine generally at In. As shown this engine comprises a crankcase l2 which includes a lower portion l3 and an upper portion I4, the latter including a pair of spaced cylinders l5 and an enlarged cylinder l6 therebetween. Supported in the crankcase I show a crankshaft I8.

The cylinders l 5 are each provided with a head 23 secured to the cylinder block by bolts 24 and each includes a neck 25 which extends downwardly into the cylinder and the outer peripheral wall of which is spaced from the inner surface of the cylinder.

Positioned in each of the cylinders I5 I provide a sleeve valve 26 which is provided in its outer face with a plurality of piston rings 2! and in- 5 eludes a suitable inlet port and an outlet port.

This sleeve 26 is adapted to reciprocate in the cylinder and extends into the space between the cylinder wall and neck 25. The lower portion of the neck 25 on its outer surface is provided with a plurality of piston rings 38 which engage the inner surface of the sleeve. Adjacent the lower end of the sleeve 26 is included a tongue 3| which is pivotally connected to a bracket 32 by a pin 33. The bracket may be arranged to be reciprocated by rotation of the shaft l8.

Positioned in each of the sleeves 26 I provide a piston 35 which is suitably connected to the shaft l8. When the crank shaft I8 is rotated the valve sleeve 26 and the pistons 35 reciprocate.

Above the cylinder I6 I provide a housing 53 secured to the engine block by bolts 54. A cover 55 is secured to the housing 53 by bolts 56. Intermediate the cylinder l6 and each of the cylinders l5 and offset from the axis thereof I provide spherical firing chambers indicated at 10. As

shown these chambers are formed by a hemispherical recess ll provided in the engine block and a similar recess 12 in the body of a fuel pump indicated generally at 13.

Inthe wall of each of the cylinders I5 I provide a port 15 which communicates with the adjacent firing chamber 18. Furthermore, in the walls of each of the cylinders I5 I provide an exhaust port 16 which is adapted to communicate with the interior of an exhaust manifold 11.

Each of my novel fuel'pumps 13 includes a cylinder 88 which is open at its lower'end and closed at the upper end where a reduced aperture 8| provided in the top wall communicates with a chamber 82 in an intake manifold 83. In the upper wall of the chamber 82 I provide an aperture 84 which communicates with the interior of the manifold 83 and the passageway through the aperture is controlled by a one-way valve mechanism 85 which may be of any desired construction.

In the wall of the cylinder 80 I provide a port 86 which communicates with the firing chamber 18 and in the body of the fuel pump I provide a by-pass aperture 81 which opens into the cylinder 86 at two vertically aligned spaced points. (See Fig. 1.)

Positioned in each of the cylinders 80 I provide a piston 88 which includes a coaxial bore 89 open at the lower end and closed at the upper end. In the outer surface of the piston 88 I provide a plurality of'piston rings 90 and in the sidewalls of the piston I provide ports 9| and 92.

The piston 88 is adapted to reciprocate in the cylinder 80 and in one position of the piston the port 9| is adapted to register with the port 86 and in another position of the piston the port 92 is adapted to register with the lower opening of the by-pass 87. 1

Integral with the piston 88 and extending therebelow I provide a tongue 93 which is pivotally connected to a yoke 94 by a pin 95. The yoke 94 is mounted on an eccentric or cam 96 which is secured to a cam shaft 91 supported in bearings 98.

Positioned in the bores 89 of the pistons 88 I provide a plunger 99 which is adapted to reciprocate in the bore and includes an integral downwardly extending tongue I00 which is pivotally connected to a yoke lol by a pin I02. This yoke llll is mounted on a cam I03 secured to the cam I 04 which is pivotally connected as at I05 to the upper end of a vertical rod I06 positioned in a bearing I 01 in the crank case. The lower end of the rod I06 is slackly connected as at I08 to one end of a lever I09 which is pivotally mounted on a pin H0 supported in bearings H2 on the crank case. Adjacent the end of the lever opposite the rod I06 I provide an elongated aperture H3.

Secured to the crank shaft I8 I provide a cam I I4 having a collar I I5 thereon which is provided with a pin H6 which is positioned in the elongated aperture H3 of the lever I09. Thus when the crank shaft I8 is rotated the cam H4 rotates in the collar H5 raising and lowering it and the pin H6 which in turn rocks the lever I09 thereby reciprocating the rod I06 which in turn rocks the cam shaft 91 through the medium of the arm I04. As the shaft 91 is rocked it reciprocates the pistons 88 through the medium of the cams 96 and the yokes 94 and at the same time it reciprocates the plungers 99 through the medium of the cams I03 and the yokes I0 I.

In the fuel pump body I3 I provide a threaded aperture H8 which communicates with the firing chamber I0 and in which a spark plug H9 is adapted to be positioned.

Any desired type of distributing system may be used to direct electrical current to the spark plugs H9 at the proper time and the distributor may be actuated in any desired manner, but in the accompanying drawings I have shown a distributor I20 as adapted to be actuated from the cam shaft 91.

A suitable intake manifold I2I communicates with a gasoline carburetor I22 and is provided with a throttle valve I22 and the intake manifold 83 communicates with a fuel oil carburetor I23 and is provided with'a throttle valve I24.

When the engine operates fuel oil will be drawn from the carburetor I23 through the intake manifold 83 to the fuel pumps I3.

Fuel is drawn into the upper portion of the cylinder 80 of the fuel pump I3 from the intake manifold 83 through the aperture 8|. The fuel is drawn into the cylinder 80 as the piston 88 moves downward and when the piston 88 moves upward the fuel in the cylinder thereabove is compressed until the port 92 in the piston 88 registers with the lower opening of the by-pass 81 whereupon the compressed fuel expands into the bore 89 of the piston. As the piston 88 moves downward again and the piston port 92 moves out of register with the lower opening of the bypass the fuel is trapped in the piston bore 89 between the top of the piston and the top of the plunger 99.

The piston 88 and the plunger 99 are so timed that the trapped fuel is compressed to the combustion point just previous to the time the piston port 9I registers with the port 86 communicating with the firing chamber I0, so that when the ports 86 and 9| are in register the trapped fuel in the piston 88 passes through these ports.

At the time the ports 86 and 9I are fully in register the plunger 99 moves upward and forces all the fuel out of the piston bore 89 and closes the piston port 9| and then the piston 88 again moves upward.

From the foregoing description it will be apparent that I have provided an improved hydrocarbon engine fuel pump which is highly efficient and which can be economically manufactured.

Having thus described my invention I claim:

In a fuel pump, a cylinder having an inlet, a valve for controlling said inlet, said cylinder having an outlet, said cylinder including a pair of spaced openings in communication with each other, a hollow piston in said cylinder, said piston being closed at the portion adjacent to said cylinder inlet, said piston having an outlet port communicating with the interior thereof and adapted in one position of said piston to register with said outlet of said cylinder, at second port in said piston communicating with the interior thereof, said second port in one position of said piston being adapted to register with one of said spaced openings, the other of said openings being near the end of said cylinder, a plunger in said piston adapted to first reduce the volume between the top of said piston and said plunger and when said piston outlet port registers with said outlet port of said cylinder to first allow free passage through said outlet port at the time of compression and I then obstruct the passage through said outlet port, and means to move said piston and said plunger.

LEWIS H. HANEY. 

